Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2016 8 18.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 08/19/2016   18:23:08   (  69.19, -98.01) 08/19/2016   18:24:16  (  69.10, -96.37)   65.60                68
 08/19/2016   19:13:37   ( -68.40,  70.37) 08/19/2016   19:13:57  ( -68.39,  70.37)    1.23                20
 08/19/2016   20:04:21   (  68.28,-122.17) 08/19/2016   20:03:24  (  68.27,-122.13)    2.46                57
 08/22/2016   10:39:48   (  68.46,  18.75) 08/22/2016   10:40:55  (  68.45,  18.70)    1.85                67
 08/22/2016   11:30:30   ( -68.37,-173.81) 08/22/2016   11:30:25  ( -68.35,-173.79)    1.71                 5
 08/22/2016   12:21:08   (  67.93,  -5.95) 08/22/2016   12:19:56  (  68.01,  -6.55)   26.55                72
 08/25/2016   02:56:41   (  68.43, 134.56) 08/25/2016   02:57:23  (  68.42, 134.55)    0.94                42
 08/25/2016   03:47:23   ( -68.34, -58.00) 08/25/2016   03:46:53  ( -68.32, -57.94)    2.86                30
 08/27/2016   18:23:04   ( -69.26,  81.90) 08/27/2016   18:24:12  ( -69.18,  83.74)   73.07                68
 08/27/2016   19:13:34   (  68.41,-109.63) 08/27/2016   19:13:51  (  68.39,-109.60)    1.74                17
 08/27/2016   20:04:15   ( -68.25,  57.88) 08/27/2016   20:03:22  ( -68.24,  57.85)    2.15                53
 08/30/2016   10:39:42   ( -68.49,-161.27) 08/30/2016   10:40:51  ( -68.49,-161.24)    1.28                69
 08/30/2016   11:30:25   (  68.33,   6.25) 08/30/2016   11:30:19  (  68.31,   6.19)    2.82                 6
 08/30/2016   12:21:04   ( -68.07, 173.89) 08/30/2016   12:19:51  ( -68.10, 173.57)   13.86                73